Publications by authors named "Dhruv Bhatnagar"

Background: The time before conception is an important opportunity to improve maternal lifestyle, and hence improve fertility and health. However, the components of effective preconception lifestyle interventions are unclear.

Objective And Rationale: This review aimed to assess the association of intervention characteristics and behaviour change techniques with the effect of lifestyle interventions on fertility, obstetric, foetal, anthropometric, and metabolic outcomes in women planning a pregnancy.

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Hypoxic burden (HB) is a measure incorporating frequency, depth and duration of respiratory event-related desaturations. While HB is associated with cardiovascular disease in adults with obstructive sleep apnea (OSA), it has not been assessed in typically developing (TD) children with OSA, nor in children with Down syndrome (DS), who have a higher incidence of OSA with more severe hypoxia. We assessed whether HB in these children was related to heart rate variability (HRV), an indicator of cardiovascular outcomes.

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Helicobacter pylori cells undergo chemotaxis toward several small molecules, called chemo-attractants, including urea produced by the epithelial cells of the stomach. The biophysical mechanisms of chemotaxis are not well understood in H. pylori.

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Hydroxyapatite (HAp) with the chemical formula Ca(PO)(OH) is an inorganic material that exhibits morphology and composition similar to those of human bone tissues, making it highly desirable for bone regeneration applications. As one of the most biocompatible materials currently in use, HAp has undergone numerous attempts to enhance its mechanical strength. This research focuses on investigating the influence of magnesium (Mg) incorporation on the structural and mechanical properties of synthesized magnesium-doped hydroxyapatite (MgHAp) samples.

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Article Synopsis
  • The Lumi-Solve photo-angioplasty drug eluting balloon catheter (DEBc) aims to improve safety over existing DEBc by exploring alternatives to fibre-optic delivery through the guidewire port, which may hinder effectiveness.
  • The study analyzed the impact of guidewire shadowing on light transmission and tested new designs for intra-balloon fibre-optic ports using modified balloons and translucent tubing.
  • Results showed that standard configurations reduced light intensity and drug activation, while new spiral designs significantly improved UV light transmission, suggesting that a separate port may be necessary for better results.
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Highly nanocrystalline carbonated hydroxyapatite (CHAp) is synthesized by hydrothermal technique with four different stoichiometric compositions for microstructural and mechanical analysis. HAp is one of the most biocompatible material and addition of carbonate ions lead to increase in fracture toughness highly required in biomedical applications. The structural properties and its purity as single phase is confirmed by X-ray diffraction.

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